An optical filter structure for an imager which has customized sub-wavelength elements used to maintain the filter characteristics accordingly across a photo-conversion device to optimize the structure for the angle of incidence as it changes across the imager photo-conversion device. In particular,...http://www.google.fr/patents/US7965444?utm_source=gb-gplus-shareBrevet US7965444 - Method and apparatus to improve filter characteristics of optical filters
Method and apparatus to improve filter characteristics of optical filters
